Paper-interfolding machine



W. T. LAZAR.

PAPER INTERFoLmNG MACHINE.

APPLICATION FlLED AUG.3, 1920.

K121215611221 MM.V 22, 1921.

4 SHEETS--SHEET l.

bw mu mw .NW mm, uw

w. 1. 'LAZAHI PAPER INTERFOLDNG MlpXCfIINEl APPLICATION FILEDAUC 3| 1920.

E@ MLVWQ 'Y 3., .Patented Mar. 22, @EL

4SHEETS-SHEE`| 2.

APPLICATION FILED AUG.3, i920.

W. T. LAZAR.

PAPER INTERFULDING MACHINEt Patented Mr.22`,1921. l

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PAPER INTERFOLDING MACHINEg APPLICATION man Auw. 1920.

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ne U Il l wheel 43 being secured to the journal 4l at the opposite end of the roll 2 for hand operation in threading the machine and in drivingroll and of the rolls 26, each of said 1 gears 47 being arranged to mesh with the gear 42 of the coperating folder roll `2 whereby each cutter roll 26is driven in opposite direction to the complementary folder roll 2. In my present practice i have made the folder rolls 2 and'outter rolls 26, together with the gears 42 and 47, of equal diameten thereby obtaining the same peripheral speed for each roll, but, rolls of any i size provided with suitable gears to obtain the same peripheral speed may be substituted if desired. j

Power driver feed rolls 51, provided with journals '52, are rotatably mounted in the housing 1 and arranged to be driven attire same peripheral speed as the foldigxnlls 2 and cutting rolls 26 by means of pinions 53 engaging gears 54 provided onfthe feed roll journals 52 and gears 56 mounted upon the journals'41 of the folder rolls 2 at the end opposite ,the driving gears 42. Free rotating feed/rolls 57 are rotatably mounted adjacent the power drivenrolls 51 in coperating relation thereto for feeding thepaper ebs 32 `to the cutting and feeding rolls at t e required speed thereby insuring against .displacement of the severed vends of pa er during the interfolding process. xAn i ler roller 58 is 'suitable mounted above oneset of the -feed rollers 51 and 57 whereby both paper webs 32 maybe supplied from one end of the machine. -E

In operation my invention is asfollowsj: The paper webs 32A are threadedbetween the several rolls as vshown in Fig. 1 ofthe drawings. .When owerf is applied te the driv` ing roll the 'older rolls 2, together with their coperating lcutter rolls 26 are :simultaneously driven iuoppositel directions at equal peripheral speed. The cutter rolls 26 are arrangedin a manner to direct the cutter blades 29 to enter between the spaced folder` bars 4, thereby severing a sheet of paper 33 from the paper -web 32; The diametncally opposed cutter .blades 29 and folder blades 4 caused two sheets 33 to be severed from each web' 32 at each revolution of the rolls. The entrance of the lcutter 29 between the folderv bars '4 `causes the ends 34 of the sheets 33 to be turned inwardly between s aid folder bars Mind engaged by the piercing points 6 and carried forward during the succeeding period of rotation.

The folder rolls 2 are arranged in such manner that each pair of folder blades 4 will register with a coperatin gripping jaw recess 17 of the adjacent roll 2 during rotation. The slidablyv mounted ,folder blades 4 are normally inclosed within the slots 3. -As the rolls 2 are rotated the rollers 8 engage the cams 9, thereby -1noving the `folder bar 7 outwardly to bring the folder blades 4 into operative position, severing the web 32 and enga ing the severed ends 34 of the sheets 33. he resilient packing 31 is provided adjacent the cutter blades to permit the points 6 to pierce the ends 34 of the sheets 33 as severed from the web 32. fis rotation is continued the folder bar 7 is `further outwardly displaced to cause the end folder blades 4 to enter the jaw recess 17; As the 'cutting elementsjof the two coperating sets. o rolls are ."arranged to operate alternately, the severed ends 34 of one web 32 will be brought opposite the lateral median line of the sheet severed from the opposite web. .In this manner the folder bars 4, engaging the severed ends of one web 32, operates to fold said severed ends into thev opposite. sheet 33 at the median line by entering the jaw Irecess 17.l

The movable jawV 18 which is normally maintained inclosedposition is caused to open to admitthefolder blades 4 by engagei: ment of ther rollexs23 with cams 24.' At

the instant theQfolderlblades l4 reach the eXtreme-point of entrance-within the open jaw recess 17,- tl1evcai`n24 releases the roller` 23,/thereby-causing the movable jaw 18 to engage a33i-,and the severed end 34,

the-folder barj bein simultaneously re- In this meuneries eets 33 are alternately severed from thetwo webs 32 and successivclyfolded`l at v.the middle to incluse they severed ends 34ofsheets 33 severed from the opposite lweb32.j he tensiouof the springs 11 is-enough to normally retain "the ar's,7 seated within .the slots 3. As the"-folder bars are withdrawn from the extended position as thev rollers Spass the high points of the cams 9 the return is eushvionedby Ttlienspgings 12,

' thereby'preventingl'iny sharp impact with the roll 2. `Iri this manner noise is prevented and wear and tear on the machine greatly reduced. f

The folded sheets 33 are released when the roller 23 engages a second cam 25 operating to open the jaw -18 as rotation continnes. 4

Suitable strippers 61 are mounted adjacent the folder rolls 2 in engaging reluti`on with annular grooves 62 formed in the surface of the folder rolls 2.. Conveyin tapes 63 are operatively mounted below the leased-to, rdisengage te severed ends 34.

entier rolls rotatably mounted adjacent the foldel' rolls; power driven feed rollers zu ranged to feed a continuous paper wel) between euch 'older roll and the corresponding cutter xoll; L pair of cutter blades mounted upon each cutter roll, seid cutter blades l eing arranged to engage the spaced felder blades to sever sheets of paper from said continuous webs of peper; piercing points formed upon the folder blades to engage the seveed ends of paper and means for :Lemaing said 'foldel` blades o interlold said severed ends within the fold of the laterally folded sheet; and means for 'tlldl'mviug Said folder blmles to release 'the sevend ends from llxe 'piercing' points.

ln witness .vlxe'eol' l hereunlo Sel; my' eig Datum. 

